BMW 5251 Service Manual page 78

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Engine Removal and Installation
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Where applicable, remove schraedervalve cap (arrow) from
air connection on fuel rail. Using a tire chuck, blow fuel back
through feed line using a brief burst of compressed air (rnax-
imum of 3 bar or 43.5 psi).
WARNING
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Fuel in fuel line is under pressure (approx. 3
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5 bar or 45
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75psi) andmay be expelled underpressure. Do not smoke
or work near heaters or other fire hazards. Keep a fire ex-
tinguisher handy Before disconnecting fuel hoses, wrap a
cloth around fuel hoses to absorb any leaking fuel. Catch
and dispose of escaped fuel. Plug all open fuel lines.
Alwavs unscrew the Fuel tank cao to release oressure
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in the tank before working on the tank or lines.
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Raise car and support in a safe manner.
WARNING-
Male sure the car is stable and we/ supported at all times.
Use a professional automotive lift orjackstands designed for
the purpose. A floor jack is not adequate support
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Working underneath car, remove protective engine splash
guard.
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Disconnect fuel lines by sliding locking collar in (arrows) and
pulling line apart.